Permethrin and malathion LD90 values for Culex quinquefasciatus vary with topical application site
Abstract
Prior research in multiple insect species has demonstrated that insecticide‐induced mortality varies according to the body region exposed on the insect. This variation has been demonstrated in Culex quinquefasciatus Say (Diptera: Culicidae), but has not been quantified using dose–response curves. Applications of technical permethrin or malathion to one of three body regions on Cx. quinquefasciatus resulted in dose–response curves that were not equivalent to one another. The generated LD90 values and curves for each body region were compared with previously reported LD values for analogous sites in several mo...
Source: Medical and Veterinary Entomology - March 1, 2017 Category: Veterinary Research Authors: R. L. ALDRIDGE, P. E. KAUFMAN, J. R. BLOOMQUIST, S. A. GEZAN, K. J. LINTHICUM Tags: Original Article Source Type: research
Distribution of the tick Dermacentor reticulatus in the United Kingdom
The recent implication of Dermacentor reticulatus (Ixodida: Ixodidae) in the transmission of canine babesiosis in the U.K. has highlighted the lack of accurate published data on its distribution in this country. This paper aims to collate and appraise historical data for D. reticulatus, to supplement such data with more recent surveillance data and to report on field sampling conducted during 2009–2016. These updated data facilitate better understanding of the current distribution of this tick in the U.K., which will better inform disease risk assessments. There appear to be four known regions of the U.K. in which D. ret...
Source: Medical and Veterinary Entomology - March 1, 2017 Category: Veterinary Research Authors: J. M. MEDLOCK, K. M. HANSFORD, A. G. C. VAUX, B. CULL, S. ABDULLAH, M. E. PIETZSCH, R. WALL, N. JOHNSON, L. P. PHIPPS Tags: Original Article Source Type: research
Vector competence and innate immune responses to dengue virus infection in selected laboratory and field ‐collected Stegomyia aegypti (= Aedes aegypti)
Abstract
Control of dengue virus (DenV) transmission, primarily based on strategies to reduce populations of the principle vector Stegomya aegypti (= Aedes aegypti) (Diptera: Culicidae), is difficult to sustain over time. Other potential strategies aim to manipulate characteristics such as vector competence (VC), the innate capacity of the vector to transmit the virus. Previous studies have identified genetic factors, including differential expression of apoptosis‐related genes, associated with the refractory and susceptible phenotypes in selected strains of S. aegypti from Cali, Colombia. The present study was desig...
Source: Medical and Veterinary Entomology - March 1, 2017 Category: Veterinary Research Authors: I. M. SERRATO, P. A. CAICEDO, Y. OROBIO, C. LOWENBERGER, C. B. OCAMPO Tags: Original Article Source Type: research
A new method for the production of sterile colonies of Lucilia sericata
This study aimed to produce a colony of sterile adults, using current egg sterilization practice, but maintaining sterility through to pupation and emergence. The production of a sterile colony allows further research into the impact of bacteria on fly development and survival. Eggs were placed on a sterile food source within autoclaved plant tissue culture containers to allow growth under sterile conditions. Nutrient agar plating of sterilized and non‐sterilized eggs, larvae and adults (post‐emergence), as well as the pupation medium and feed source in nutrient broth confirmed the aerobic sterility of all samples invo...
Source: Medical and Veterinary Entomology - March 1, 2017 Category: Veterinary Research Authors: N. E. GASZ, M. L. HARVEY Tags: Original Article Source Type: research
Description of Pintomyia salomoni sp. n., a new phlebotomine species from northwest Argentina
Abstract
A new species of phlebotomine sandfly is described and illustrated using male and female specimens collected in the provinces of Jujuy and Tucumán, Argentina. Both male and female morphological characters allow the inclusion of the new species within the Pintomyia genus, Pifanomyia subgenus, serrana series (Diptera: Psychodidae). The species was denominated as Pintomyia salomoni n. sp., and is closely related to Pintomyia (Pifanomyia) torresi and Pintomyia (Piffanomyia) boliviana. (Source: Medical and Veterinary Entomology)
Source: Medical and Veterinary Entomology - March 1, 2017 Category: Veterinary Research Authors: A. D. FUENZALIDA, M. G. QUINTANA Tags: Original Article Source Type: research
Morphology and DNA barcoding reveal three species in one: description of Culicoides cryptipulicaris sp. nov. and Culicoides quasipulicaris sp. nov. in the subgenus Culicoides
Abstract
Species of the genus Culicoides (Diptera: Ceratopogonidae) are well known for their importance in the field of medical and veterinary entomology. Culicoides spp. transmit a wide variety of pathogens, primarily viruses that affect animals and humans. In Europe, the most economically important disease transmitted by Culicoides is bluetongue (BT). Culicoides spp. have been recently involved as primary vectors for Schmallenberg disease. The taxonomy within the subgenus Culicoides has been historically difficult and reorganizations have been proposed regularly. The subgenus Culicoides includes species that are consider...
Source: Medical and Veterinary Entomology - March 1, 2017 Category: Veterinary Research Authors: S. TALAVERA, F. MU ÑOZ‐MUÑOZ, M. VERDÚN, N. PAGÈS Tags: Original Article Source Type: research
Francisella tularensis prevalence and load in Dermacentor reticulatus ticks in an endemic area in Central Europe
Abstract
A total of 7778 host‐seeking adult Dermacentor reticulatus (Ixodida: Ixodidae) ticks were examined for the prevalence of Francisella tularensis holarctica (Thiotrichales: Francisellaceae) in a natural focus of tularaemia in the floodplain forest–meadow ecosystem along the lower reaches of the Dyje (Thaya) river in South Moravia (Czech Republic) between 1995 and 2013. Ticks were pooled (10 specimens per pool) and their homogenates inoculated subcutaneously in 4‐week‐old specific pathogen‐free mice. Dead mice were sectioned, their spleens cultivated on thioglycollate–glucose–blood agar and impression s...
Source: Medical and Veterinary Entomology - February 28, 2017 Category: Veterinary Research Authors: Z. HUB ÁLEK, I. RUDOLF Tags: Short Communication Source Type: research
Mitochondrial DNA analysis of Rhipicephalus sanguineus s.l. from the western Iberian peninsula
In this study, 475 ticks collected from dogs in the western Iberian peninsula were studied both morphologically and genetically, using 12S and 16S rDNA and COI gene markers in order to clarify the controversy over the systematic status of R. sanguineus sensu lato in Western Europe, and to compare the present data with those sourced from studies conducted in other regions of the world. Despite the high morphometric variability, particularly on spiracles in both genders and in female genitalia, data obtained with different genetic molecular markers show very low variability, suggesting the existence of a unique species. In a...
Source: Medical and Veterinary Entomology - February 6, 2017 Category: Veterinary Research Authors: C. ALMEIDA, R. SIM ÕES, M. J. COIMBRA‐DORES, F. ROSA, D. DIAS Tags: Original Article Source Type: research
Blood feeding of Ornithodoros turicata larvae using an artificial membrane system
Abstract
An artificial membrane system was adapted to feed Ornithodoros turicata (Ixodida: Argasidae) larvae from a laboratory colony using defibrinated swine blood. Aspects related to larval feeding and moulting to the first nymphal instar were evaluated. A total of 55.6% of all larvae exposed to the artificial membrane in two experimental groups fed to repletion and 98.0% of all fed larvae moulted. Mortality rates of first instar nymphs differed significantly depending on the sorting tools used to handle engorged larvae (χ2 = 35.578, P < 0.0001): engorged larvae handled with featherweight forceps showed signi...
Source: Medical and Veterinary Entomology - February 2, 2017 Category: Veterinary Research Authors: H. J. KIM, S. FILATOV, J. E. LOPEZ, A. A. P ÉREZ DE LEÓN, P. D. TEEL Tags: Short Communication Source Type: research
Shifts in the ecological niche of Lutzomyia peruensis under climate change scenarios in Peru
Abstract
The Peruvian Andes presents a climate suitable for many species of sandfly that are known vectors of leishmaniasis or bartonellosis, including Lutzomyia peruensis (Diptera: Psychodidae), among others. In the present study, occurrences data for Lu. peruensis were compiled from several items in the scientific literature from Peru published between 1927 and 2015. Based on these data, ecological niche models were constructed to predict spatial distributions using three algorithms [Support vector machine (SVM), the Genetic Algorithm for Rule‐set Prediction (GARP) and Maximum Entropy (MaxEnt)]. In addition, the envi...
Source: Medical and Veterinary Entomology - February 1, 2017 Category: Veterinary Research Authors: D. A. MOO ‐LLANES, W. ARQUE‐CHUNGA, O. CARMONA‐CASTRO, C. YAÑEZ‐ARENAS, H. H. YAÑEZ‐TRUJILLANO, L. CHEVERRÍA‐PACHECO, C. M. BAAK‐BAAK, A. G. CÁCERES Tags: Original Article Source Type: research
Quality control of a medicinal larval (Lucilia sericata) debridement device based on released gelatinase activity
Abstract
Lucilia sericata Meigen (Diptera: Calliphoridae) larvae are manufactured worldwide for the treatment of chronic wounds. Published research has confirmed that the primary clinical effect of the product, debridement (the degradation of non‐viable wound tissue), is accomplished by a range of enzymes released by larvae during feeding. The quality assessment of larval activity is currently achieved during production using meat‐based assays, which monitor insect growth and/or the reduction in substrate mass. To support this, the present authors developed a complementary radial diffusion enzymatic assay to produce a ...
Source: Medical and Veterinary Entomology - January 23, 2017 Category: Veterinary Research Authors: S. F. PICKLES, D. I. PRITCHARD Tags: Original Article Source Type: research
Phlebotomine sandfly ecology on the Indian subcontinent: does village vegetation play a role in sandfly distribution in Bihar, India?
Abstract
Visceral leishmaniasis (VL) is a disease that results in approximately 50 000 human deaths annually. It is transmitted through the bites of phlebotomine sandflies and around two‐thirds of cases occur on the Indian subcontinent. Indoor residual spraying (IRS), the efficacy of which depends upon sandfly adults resting indoors, is the only sandfly control method used in India. Recently, in Bihar, India, considerable sandfly numbers have been recorded outdoors in village vegetation, which suggests that IRS may control only a portion of the population. The purpose of this study was to revisit previously published res...
Source: Medical and Veterinary Entomology - January 19, 2017 Category: Veterinary Research Authors: D. M. POCH É, R. M. POCHÉ, S. MUKHERJEE, G. A. FRANCKOWIAK, L. N. BRILEY, D. J. SOMERS, R. B. GARLAPATI Tags: Original Article Source Type: research
Molecular screening of Leishmania spp. infection and bloodmeals in sandflies from a leishmaniasis focus in southwestern Turkey
Medical and Veterinary Entomology, Page 224-229, March 2018. (Source: Medical and Veterinary Entomology)
Source: Medical and Veterinary Entomology - December 2, 2016 Category: Veterinary Research Source Type: research
---
Medical and Veterinary Entomology, Page 224-229, March 2018. (Source: Medical and Veterinary Entomology)
Source: Medical and Veterinary Entomology - December 2, 2016 Category: Veterinary Research Source Type: research
